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math/w_atan2_template.c
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Paul Eggert
Update copyright dates with scripts/update-copyrights
02 янв 2026, 00:42
02 янв 2026, 00:42
66f3e92
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/* Wrapper to set errno for atan2. Copyright (C) 2017-2026 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ /* Only build wrappers from the templates for the types that define the macro below. This macro is set in math-type-macros-<type>.h in sysdeps/generic for each floating-point type. */ #if __USE_WRAPPER_TEMPLATE # include <errno.h> # include <math.h> # include <math_private.h> FLOAT M_DECL_FUNC (__atan2) (FLOAT y, FLOAT x) { FLOAT z = M_SUF (__ieee754_atan2) (y, x); if (__glibc_unlikely (z == 0 && y != 0 && isfinite (x))) /* Underflow. */ __set_errno (ERANGE); return z; } declare_mgen_alias (__atan2, atan2) #endif /* __USE_WRAPPER_TEMPLATE. */